Update using loop

[anoopd]

Hi folks,
I have a table fetched from a db which is editable .The code is

<form  method=post action="<?$_SERVER["PHP_SELF"];?>">
<center>
<table border=0 cellpadding=5 cellspacing=5>
<tr><td>Name</td><td></td></tr>

<?
for($i = 0; $i < $count; $i++)
  {
  $item = mysql_fetch_assoc($query);

echo"<tr><td><input name=\"rname[]\"  value=".$item['name']."></td><td><input type=hidden  name=\"id[]\" value=".$item['id']."></td>";
echo"</tr>";
}

?>

<tr><td align=center colspan=9><INPUT class=button type=submit value=Save name=action></td></tr>



</table>

</form>      

if($_POST["action"] == "Save")
  {
}

Please somebody help me to update this values using loops.